| "Integration of three networks" is a typical manifestation of the gradual integration of current technologies and standards, in order to NGN Soft Switch as the core of the network has become a major trend of the future development of the power system communication will also benefit from this technology. Through the study of the power of voice and video communications, the proposed integrated solution using SoftSwitch systems and a set of communication tools based on open source software solutions, and the actual business of design and implementation.Firstly, the communication system in several types of key technologies are described. As the popular SIP protocol signaling protocol system. Also introduced the popular WebRTC standard, audio and video coding technology and media streaming technology. On this basis, this paper gives the power system of command and dispatch system design multimedia communication platform, and select FreeSwitch as the softswitch platform multimedia communications software. By analyzing the FreeSwitch core structural features, SIP signaling the implementation process, the call control process, extensions to achieve the realization of secondary development for FreeSwitch WEB GUI management interface; against the power company a lot of original WEB application, in the traditional web interface by embedding web phone features, enhancements, and achieve browsers and general SIP soft phones, smart terminals, public telephones instant messaging capabilities. Click to Call can be easily embedded into existing WEB page, strengthening liaison between the power company personnel.In addition, according to the power company’s actual business needs to fully verify the feasibility of the system, usability testing. Successful implementation of this communication platform for power system dispatch and command and multimedia video conferencing system provides a strong guarantee and support, and facilitate the expansion of more applications business. |
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